I bought a new compaq F756NR with a
1280 X 800 screen
Atheos AR242x 802.11abg Wireless card
NVidia Geforce 7000M graphics card

I ran the ubuntu hardy heron live cd and I had these problems
It picked up my screen as 800 X 600 and wouldn't let me change it
It found the drivers for wireless but I couldn't connect to my router
I tried to apply compiz fusion and it couldn't use my Nvidia